What muscles form the Iliopsoas
Psoas major, psoas minor and Iliacus
O of Psoas Major m.
Transverse process & Bodies of lumbar vertebrae
I of Psoas Major m.
Lesser trochanter of femur (fusing with iliacus)
Action of Psoas Major m.
Flexion & lateral rotation of thigh at hip jnt. & and flexion of trunk on hip
Innervation of Psoas Major m.
Lumbar spinal n.L2-L3
O of Psoas Minor m.
12th thoracic & 1st lumbar vertebrae
I of Psoas Minor m.
Iliopectineal line or fused with psoas major
Action of Psoas Minor m.
Flexion of pelvis on abdomen
Innervation of Psoas Minor m.
Lumbar plexus
O of Iliacus m.
Iliac fossa & sacrum
I of Iliacus m.
Tendon of psoas major into lesser trochanter of femur
Action of Iliacus m.
Flexion & lateral rotation of thigh at hip jnt.
Innervation of Iliacus m.
Femoral n.
O of Gluteus maximus m.
Iliac crest , posterior gluteal line, sacrum & coccyx
I of Gluteus maximus m.
Iliotibial tract of tensor fascia latae & gluteal tuberosity of femur
Action of Gluteus Maximus m.
Extension & lateral rotation of thigh
Innervation of Gluteus Maximus m.
Inferior gluteal n.
O of Gluteus Medius m.
Ilium between anterior & posterior gluteal lines
I of Gluteus Medius m.
Greater trochanter of femur
Action of Gluteus Medius m.
Abduction & medial rotation of thigh
Innervation of Gluteus Medius m.
Superior gluteal n.
O of Gluteus Minimus m.
Ilium between anterior & inferior gluteal lines
I of Gluteus Minimus m.
Greater trochanter of femur
Action of Gluteus Minimus m.
Abduction & Medial rotation of thigh
Innervation of Gluteus Minimus m.
Superior gluteal n.
O of Tensor fascia latae m.
Anterior superior iliac spine & iliac crest
I of Tensor Fascia Latae m.
Iliotibial tract which attaches to lateral tibia
Action of Tensor Fascia Latae m.
Flexion & abduction of thigh at hip jnt.
Innervation of Tensor Fascia Latae m.
Superior gluteal n.
O of Piriformis m.
Anterior surface of sacrum
I of Piriformis m.
Greater trochanter of femur
Action of Piriformis m.
Lateral rotation & abduction of thigh at hip jnt.
Innervation of Piriformis m.
Sacral plexus
O of Superior Gemellus m.
Ischial spine
I of Superior Gemellus m.
Greater trochanter of femur
Action of Superior Gemellus m.
Lateral rotation & abduction of thigh at hip jnt.
Innervation of Superior Gemellus m.
Lumbosacral plexus
O of Obturator Internus m.
Inner surface of obturator foramen, pubis & Ischium
I of Obturator Internus m.
Greater trochanter of femur
Action of Obturator Internus m.
Lateral rotation & abduction of thigh at hip jnt.
Innervation of Obturator Internus m.
Lumbosacral plexus.
O of Inferior Gemellus m.
Ischial tuberosity
I of Inferior Gemellus m.
Greater trochanter of femur
Action of Inferior Gemellus m.
Lateral rotation & abduction of thigh at hip jnt.
Innervation of Inferior Gemellus m.
Lumbosacral plexus
O of Quadratus Femoris m.
Ischial tuberosity
I of Quadratus Femoris m.
Quadrate tubercule of femur
Action of Quadratus Femoris m.
Lateral rotation & stabilization of thigh at hip jnt.
Innervation of Quadratus Femoris m.
Lumbosacral plexus
O of Obturator Externus m.
Outer surface of obturator foramen & membrane
I of Obturator Externus m.
Trochanteric fossa of femur
Action of Obturator Externus m.
Lateral rotation & abduction of thigh at hip jnt.
Innervation of Obturator Externus m.
Obturator n.
What is the role of the lateral rotators
Steady the femoral head in acetabulum, therefore, stabilizing the hip joint
O of Sartorius m.
Anterior superior iliac spine
I of Sartorius m.
Proximal, medial surface of shaft of tibia
Action of Sartorius m.
Flexion, abduction & lateral rotation of thigh and flexion of leg at hip jnt.
Innervation of Sartorius m.
Femoral n.
O of Rectus Femoris m.
Anterior inferior iliac spine
I of Rectus Femoris m.
Patella via quadriceps tendon & then tibial tuberosity via patellar ligament
Action of Rectus Femoris m.
Extension of leg at knee jnt. & flexion of thigh at hip jnt.
Innervation of Rectus Femoris m.
Femoral n.
O of Vastus Lateralis m.
Greater trochanter and lateral margin of linea aspera of femur
I of Vastus Lateralis m.
Patella via quadriceps tendon & then tibial tuberosity via patellar ligament
Action of Vastus Lateralis m.
Extension of leg at knee joint
Innervation of Vastus Lateralis m.
Femoral n.
Action of Vastus Medialis m.
Extension of leg at knee jnt.
O of Vastus Medialis m.
Medial margin of linea aspera of femur
I of Vastus Medialis m.
Patella via quadriceps tendon & then tibial tuberosity via patellar ligament
Innervation of Vastus Medialis m.
Femoral n.
O of Vastus Intermedius m.
Anterior and lateral surfaces of shaft of femur
I of Vastus Intermedius m.
Patella via quadriceps tendon & then tibial tuberosity via patellar ligament
Action of Vastus Intermedius m.
Extension of leg at knee jnt.
Innervation of Vastus Intermedius m.
Femoral n.
O of Pectineus m.
Superior ramus of pubis
I of Pectineus m.
Pectineal line of femur, between lesser trochanter and linea aspera
Action of Pectineus m.
Flexion & adduction of thigh at hip jnt.
Innervation of Pectineus m.
Femoral n.
O of Adductor Brevis m.
Inferior ramus of pubis
I of Adductor Brevis m.
Superior half of linea aspera of femur
Action of Adductor Brevis m.
Adduction & flexion at thigh at hip jnt., rotates thigh
Innervation of Adductor Brevis m.
Obturator n.
O of Adductor Longus m.
Pubic crest & symphysis pubis
I of Adductor Longus m.
Linea aspera femur
Action of Adductor Longus m.
Adduction & flexion at thigh at hip jnt., rotates thigh
Innervation of Adductor Longus
Obturator n.
O of Adductor magnus m.
Inferior ramus of pubis & ischium to ischial tuberosity
I of Adductor magnus m.
Linea aspera of femur
Action of Adductor magnus m.
Adduction of thigh at hip jnt.-anterior fibers flex thigh & posterior fibers extend thigh, rotates thigh
Innervation of Adductor magnus m.
Obturator & sciatic n.
The Adductor minimus m. is part of which muscle
Adductor magnus m.
O of Adductor minimus m.
Inferior ramus of pubis
I of Adductor minimus m.
Medial lip of linea aspera of femur
Action of Adductor minimus m.
Adduction and lateral rotation of thigh at hip jnt.
Innervation of Adductor minimus m.
Obturator n.
O of Gracilis m.
Body & inferior ramus of pubis
I of Gracilis m.
Proximal, medial surface of shaft of tibia
Action of Gracilis m.
Adduction of thigh at hip jnt., flexion and medial rotation of leg at knee jnt.
Innervation of Gracilis m.
Obturator n.
Describe what is unique about adductors
They cross the thigh from anterior origin to posterior insertion. & They laterally rotate the hip jnt. when the foot is off the ground, but medially rotate when the hip jnt. when the foot is on the ground.
O of long head of Biceps femoris m.
Ischial tuberosity
O of short head of Biceps femoris m.
Linea aspera of femur
I of Biceps femoris m.
Head of fibula and lateral condyle of tibia
Action of Biceps femoris m.
Flexion of leg at knee jnt. & extension of thigh at hip jnt.
Innervation of Biceps femoris m.
Sciatic n. (tibial & common fibular n.)
O of Semi-tendinosus m.
Ischial tuberosity
I of Semi-tendinosus m.
Proximal, medial surface of shaft of tibia
Action of Semi-tendinosus m.
Flexion of leg at knee jnt., & extension of thigh at hip jnt.
Innervation of Semi-tendinosus m.
Sciatic n. (tibial n.)
O of Semi-membranosus m.
Ischial tuberosity
I of Semi-membranosus m.
Medial condyle of tibia
Action of Semi-membranosus m.
Flexion of leg at knee jnt. & extension of thigh at hip jnt.
Innervation of Semi-membranosus m.
Sciatic n. (tibial n.)
O of Tibialis anterior m.
Lateral condyle and shaft of tibia & interosseus membrane
I of Tibialis anterior m.
1st metatarsal & 1st cuneiform
Action of Tibialis anterior m.
Dorsiflexion & inversion of foot
Innervation of Tibialis anterior m.
Deep fibular (peroneal) n.
O of Extensor hallus longus m.
Anterior surface of fibula & interosseous membrane
I of Extensor hallucis longus m.
Distal phalanx 1st toe
Action of Extensor hallus longus m.
Dorsiflexion of foot & extension of 1st toe
O of Extensor digitorum longus m.
Lateral condyle of tibia, anterior surface of fibula & interosseous membrane
I of Extensor digitorum longus m.
Middle & distal phalanges of toes 2-5
Action of Extensor digitorum longus m.
Dorsiflexion of foot & extension of digits 2-5
Innervation of Extensor digitorum longus m.
Deep fibular (peroneal) n.
O of Fibularis (peroneus) tertius m.
Distal 1/3 of fibula & interosseous membrane
I of Fibularis (peroneus) tertius m.
Base of 5th metatarsal
Action of Fibularis (peroneus) tertius m.
Dorsiflexion & eversion of foot
Innervation of Fibularis (peroneus) tertius m.
Deep fibular (peroneal) n.
O of Gastrocnemius m. (Lateral and medial heads)
Lateral and medial condyles of femur
I of Gastrocnemius m.
Calcaneus by way of calcaneal (Achilles) tendon
Action of Gastrocnemius m.
Plantarflexion of foot ankle jnt. & flexion of leg at knee jnt.
Innervation of Gastrocnemius m.
Tibial n.
O of Soleus m.
Head of fibula & soleal line of tibia
I of Soleus m.
Calcaneus by way of calcaneal (Achilles) tendon
Action of Soleus m.
Plantarflexion of foot at ankle jnt.
Innervation of Soleus m.
Tibial n.
O of Plantaris m.
Lateral supracondylar ridge of femur
I of Plantaris m.
Calcaneus by way of calcaneal (Achilles) tendon
Action of Plantaris m.
Plantarflexion of foot at ankle jnt. & flexion of leg at knee jnt.
Innervation of Plantaris m.
Tibial n.
O of Popliteus m.
Lateral condyle of femur
I of Popliteus m.
Proximal tibia-above popliteal line
Action of Popliteus m.
Flexion & medial rotation of the leg at knee jnt.; unlocking of extended knee
Innervation of Popliteus m.
Tibial n.
O of Tibialis posterior m.
Posterior tibia, posterior fibula & interosseous membrane
I of Tibialis posterior m.
Navicular, cuboid, 3 cuneiforms & base of metatarsals 2-4
Action of Tibialis posterior m.
Plantarflexion & inversion of foot at ankle jnt.
Innervation of Tibialis posterior m.
Tibial n.
O of Flexor digitorum longus m.
Posterior surface of tibia
I of Flexor digitorum longus m.
Distal phalanges of toes 2-5
Action of Flexor digitorum longus m.
Flexion of digits 2-5 & plantarflexion of foot at ankle jnt.
Innervation of Flexor digitorum longus m.
Tibial n.
O of Flexor hallucis longus m.
Distal 2/3 of fibula
I of Flexor hallucis longus m.
Distal phalanx of 1st toe
Action of Flexor hallucis longus m.
Flexion of 1st toe & plantarflexion of foot
Innervation of Flexor hallucis longus m.
Tibial n.
O of Fibularis longus m. (Lateral & medial heads)
Head & proximal 2/3 of fibula
I of Fibularis longus m.
1st metatarsal & 1st cuneiform
Action of Fibularis longus m.
Plantarflexion & eversion of foot at ankle jnt.
Innervation of Fibularis longus m.
Superficial fibular (peroneal) n.
O of Fibularis brevis m.
Distal 2/3 shaft of fibula
I of Fibularis brevis m.
Base of 5th metatarsal
Action of Fibularis brevis m.
Plantarflexion & eversion of foot at ankle jnt.
Innervation of Fibularis brevis m.
Superficial fibular (peroneal) n.
Innervation of Extensor digitorum brevis m.
Deep peroneal n.
Innervation of Extensor hallucis brevis m.
Deep peroneal n.
Innervation of Flexor digitorum brevis m.
Medial plantar n.
Innervation of Abductor hallucis m.
Medial plantar n.
Innervation of Abductor digiti minimi m.
Lateral plantar n.
Action of Quadratus plantae m.
Flexion of toes 2-5
Innervation of Quadratus plantae m.
Lateral plantar n.
Action of Lumbricals m.
Flexion of proximal phalanges, extension of middle & distal phalanges of toes 2-5
Innervation of Lumbricals m.
Medial & lateral plantar n.
Innervation of Flexor hallucis brevis m.
Medial plantar n.
Innervation of Adductor hallucis (Oblique & transverse head) m.
Lateral plantar n.
Innervation of Flexor digiti minimi brevis m.
Lateral plantar n.
Action of Dorsal interossei (4) m.
Abduction of toes
Innervation of Dorsal interossei (4) m.
Lateral plantar n.
Action of Plantar interossei (3) m.
Adduction of toes
